抄録
In this paper, the authors theoretically analyze the forced hunting of a bogie truck model composed of at least a six degrees of freedom system when a truck with elastically suspended axles, such as a SHINKANSEN truck, runs on a rail with sinusoidal irregularity in regard to the lateral direction of the track. As an analytical result, various optimum values, for example the supporting stiffness of the axles, the turning stiffness of the truck and the wheel tread conicity etc., for avoiding the resonant-state of the truck due to rail irregularity are revealed. It is also clear that installing a damper against truck turning is an effective method for preventing forced hunting due to rail irregularity. Target values for designing high speed vehicles are proposed.
